@tepom just wondering how did you come up with the exactness of concept #162 first used by me at an Oncological contest as well as #164 primarly used by Zubair in that same contest :) It's just a matter of curiosity rather than rivalry ;)

Great job on many of the designs. Since coal is burned to create electricity, please emphasize the output rather than the process. For example, an electric light bulb is better than a smokestack. using some blue is good to represent the cleaner approach to creating the electricity. Using thinner, lighter fonts also is best. Thanks again, and we look forward to choosing a logo in the next few days!